Thermoscale 200C

Available in a wide range of temperatures (150°C-200°C) to suit a variety of different applications.

Simply cut to size and insert as required.

Features

Features

The extent of color change depends on the temperature of the heat source and the contact time. A shorter contact time produces paler colors with a blue tint. As the contact time increases (at the same temperature), the colors become deeper and take on a red tint. Note that the color change is also influenced by factors such as the type of material on the opposite side (i.e., the non heat source side), thermal characteristics, contact pressure and air flow (see below).

Structure

The base film is coated with a thermosensitive color-forming layer and a protective layer. This is the non-glossy surface that comes into direct contact with the heat source. The glossy side of the sheet is used to observe the color patterns that represent heat distribution.

How it works

Heat melts the developer and makes the microcapsule walls permeable, allowing developer to enter the microcapsules, where it reacts with the color-forming agent to produce color.

How to use Thermoscale

1. Cut a piece of Thermoscale film to the required shape/length and place it on or inside the equipment with the non-glossy side facing the heat source.

2. Operate the equipment in the normal manner to bring the Thermoscale sheet in direct contact with the heat source.

3. Color patterning is produced on the Thermoscale sheet.

4. Remove the Thermoscale sheet and observe from the glossy side. The color patterning indicates the heat distribution over the heating surface.

Typical applications of Thermoscale

Uses

Thermoscale uses special technology that regulates color intensity and hue in accordance with heat value to generate a highly accurate depiction of heat values over a wide range.

Thermoscale is ideal for applications involving analysis of heat distribution during press, roll, and laminate processes and within drying ovens.

ACF compression bonding in LCD panels

In LCD panel production, ACF (anisotropic conductive film) is used to attach the driver IC by holding the part under pressure and applying heat via the bonding tool. If heat is unevenly distributed across the bonding surface (i.e., hotter in some places and cooler in others), the ACF may not bond properly.

Thermoscale provides an easy-to-read visual map for evaluating the uniformity of heat distribution.

Heat-sealed packages

Heat sealers are commonly used to seal packages for foodstuffs, medical supplies and products such as Li-ion batteries. A heater block applies strong heat to the end of the package to seal the plastic. If heat is distributed unevenly across the heat seal surface or the heater block, or if the packaging is not heated sufficiently, the seal may not be formed properly.

Thermoscale can be used to evaluate the quantity of heat applied to the package.

EVA bonding of solar panels

In solar panel production, the solar cells are sandwiched between the glass substrate and a protective film layer and bonded together with EVA resin in a vacuum laminator. If the heat distribution is not uniform, the EVA resin may be harder in some places and softer in others, affecting bonding performance. In some cases, the bond may hold initially but then degrade over time. Until now there has been no means of measuring heat distribution across the bonding surface.

Thermoscale provides a simple way to check for thermal inconsistencies and prevents failure.

Specifications

Product

THERMOSCALE 200C

Temperature range

150°C-210°C (Contact time = 5-20 sec.)

Base layer

PEN

Thickness

0.09mm

Size

Roll Type (width × length)

270 mm × 5 m

Sheet Type (height × width)

270 mm × 200 mm × five sheets

Note

Actual temperature range depends on conditions of use including contact time, materials, pressure, and air flow.